There are several treaties with Canada ending the War of 1812. They include things like limits on the size of weapons on naval vessels that can be on the Great Lakes. I suspect that it will also require Congress to reauthorize the Great Lakes Compact.
https://en.wikipedia.org/wiki/Great_Lakes_Compact
They have to be authorized by Congress:
https://en.wikipedia.org/wiki/Interstate_compact
That has a nice ring to it.
Fortunately the tide turns in the ocean :)
ChatGPT: “The Gulf of Mexico—between the United States, Mexico, and Cuba.”